- Published in issue 10/1997 on page 58
Touch-free lights switch:
wave the lights on and off!
This article describes a lights switch which is operated by moving your hand in front of it. This is achieved by detecting infrared light reflected by your hand onto a receiver device. Alternatively, you may use an infrared remote control unit to switch the lights on and off. Based on a solid-state relay, the switch itself is contactless.